Pencil-sharpening machine.



L. MYERS.

PENCIL SHARPBNING MACHINE. APPLICATION FILED 111111.16, 1911.

Patented 1101112.51912.

2 SHEETS-SHEET 1.

.frben/or qw@ Myers ill fff 55,995 z L. MYERS. PENCIL SHARPENING MAGHNE.

I I APPLICATION FILED AUG. 16, 1911. 41,043,861 Patented New; 12, i912.

2 SHEETS-SEEN 2.

M/essfs. Kraan/ar:

, UNITED sTATEs PATENT loEEioE.

LOUIS MYERS, F NEW YORK, N. Y.

PENCIL-SHARPENING MACHINE. y

To all whom it may concern:

Be it known that I, LOUIS MYERS, a citizen of the United States, residing in the borough of Manhattan, city, county, and State ofJ New York, have invented certain new and use'ul Improvements in Pencil- Sharpening Machines, of'which the following is a clear, full, and exact description.

The present invention relates to improve-- AThis clamp for holding the .pencil is mount-A ed to slide vertically in the machine frame,l

and suitable latching means are provided for supportingthe clamp in elevated position while the pencil is being inserted. The 1 latching means are automatically operated-- for releasing the clamp at the start of the sharpening operation. A suitable autom'atically operated gage is provided for limiting the insertion of the pencil in the clamp,

and an adjustable gage is provided for de-v termining the extent of the sharpening operation.

- In order that understood, I will first describe the same with reference to the accompanying drawings and afterward point outthe novelty more particularly in the annexed claims.

In said diawingsz-l4`iguie 1 lis a vertical sectional view of my improved pencil sharp-4 ening machine. Fig. 2 is a plan view of `the same.- Fig. 3 is a .transverse sectional view taken on the section line 3--3 of Fig. 1 looking in the direction indicated by the arrow. Fig. 4 is a transverse section on line 1 -1l of Fig. 1. Fig. 5 is a transverse section just above the top portion ot the machine showing thelatching levers and their giiging device. Fig. G is a vertical section on line G--6, Fig. Fig. 7 isa section on line 7-7, Fig. Fig. 8 is a longitudinal sectional view, partly in pla-n, of the pencil holding and feeding clamp, and gage to determine amount ot' feeding movement. Fig, 9 is a detail view o1 said gage, and Fig. 1()

Specification of Letters Patent.

4ening cutter.

Patented Nov. 12,1912.

Application led August 16, 1911. Serial No. 644,367.

is a sectional detail view on the line 10-10 ot' Fig. 2, vshowing more particularly the construction of the gage and stop device.

l is the casingof the improved machine which in the forni illustrated in the drawings, isl of approximately cylindrical shape with a slight enlargement at the base to receive a horizontally movable drawer 2 into which the pencil shavings fallin the operationoi sharpening a pencil.

The casing 1 is provided with a removable top plate 5 from which depend the two tubular guides or supports 6 and 7 which are connected at their lower ends, within the casing 1, by a cross fiar or brace 8. The top plate 5 is secured to the casing by any suitable means (not shown) and supports all of the operative parts of the machine.

An adjustable beaiiiig'screw 10 is threaded through the cross-bar 8 and has journaled upon it the' lower end of a rotary casting 12 which constitutes a guide for the sharpened vend of the pencil and a carrier for the sharp- 'I he member 12 is formed at its upper end with a bearing which receives a circular flange or journal 12A on the top plate 5. This member 12 is formed with parallel arms 13 and 141 projecting laterally from it in planes inclined to the horizontal,

and adjustably mounted in said arms are A y the cone-pointed my invention may be fully bearing screws 15 and 1G upon which joui'naled a cylindrical cutter having spiral cutting ribs or blades as in the well known torni oi inilling'eutter. The bearings 15 and 1G are set at an angle with relation to the' axis upon which the carriei 12 is journaled so as to forni witlrthe open sided conical guiding recess i2h oi earrier 12 a contracted throat into which the pointed end o1 the sharpened pencil projects.

Seeured to the upper end of the cutter 20 is a bevel gear which is in constant nies with the internal ring gear 26 rigidly secured to and supported Aby the top plate 5 between the tubular supports tl and 7, by spacing sleeves 22 shown in Fig. 1.' Secured to the upper end of the member 12 is a bevel gear 30 meshing with al similar bevel gcai 31 keyed to the inner end o't a .short horizontal shaft 32 which is jourualcd in the cylindrical bearing securcd to the upper face of the top plate 5; This shaft- 32 carpencil. Crank is then rotated to the right. causing4 arm 13 to operate upon cam 73 tor disengaging the latching levers 66 and G7 `from rods 42, with the result that the clamp and the pencil will tall by gravity until the inner end ot' the pencilgis arrested by engagement with the contracted throat 12b and the face of the cutter 9.0., The rotation et the crank ,is continued causing the milling cutter 2O to rapidly shave oil' the end of the pencil as long as it advances by the action ot' the clamp. The operation is continued until the movement oi the clamp is arrested by the engagement of projection 83 on the limiting gage S0 with one oi the other o't .stops-8G, when it will be t'oiind that the pencil is sharpened to the-degree desired. 'lhe pencil can then be removed by opening the clamp by again pressing upon the finger 49.

l have shown and described a sharpening cutter operated by a planetary system ot gears, but I would have itunderstood that other forms ot rotary sharpening cutters may be used in vmy machine without departing from the spirit of my invention.

'l-he arrangement and construction of the operative parts of my improved pencil sharpening. machine in upright position is important, first, because of the Anatui'al discharge of the shavings from the pencil by gravity into the casing, thereby effectively freeing the working .parts et' the machine from the dust. and shavings; second, because of the simplicity and effectiveness of the gravity-operated vertically moving pencil holding clamp in conjunction with the sharpening cutter which rotates in a horizontal plane; and third, because ot the simplicity of the machine trom a manufacturing standpoint. All otl the parts arccarried by the top plate which can readily be removed tor the adjust- -ment and repair ot' the parts. The gravity clamp can be removed separately hy simply withdrawing the guide rods 42 trom the tubular guides t3 and 7, the latching device being tirst. disengaged from the notches of.

, the. guide rods.

l-Vhat l claim is:

l. ln a pencil sharpening machine, the combination oit ay sharpening cutter which cuts in lixed position relatively to the pencil-receiving socket. and constitutes a rest for the lower end ot a pencil. and means for operating the said cutter. with a gravityoperated pencil-holding clamp movable toward and away troni said cutter and supported by said cutter and the' pencil, and means forming a part ot the. machine tor supporting said clamp and guiding it independently ot' the pencil.

2. ln a pencil sharpening machine, the combination oi a sharpeniiugl cutter and means for operating it. with a pencil-holdtlie receptacle at the bottom ofing clamp movable toward and away from said cutter, and a gage between the cutter and clamp 'for limiting the'entrance of the pencil in said pencil-holding clamp- 3. In a pencil sharpening machine, the combination of a sharpening cutter and` means for operating it, with a pencil-holding clamp movable toward and away trom said cutter, an adjustable gage'adapted to limit the movement. it' the clamp toward the cutter, and a gage separately positioned Jforliiiiiting the ent-rance ot the pencil iii-said pencil-holding clamp.

a. In a pencil sharpening machine, the combination of a sharpming cutter and means for operating it, nidi a gravity operated pencil holding cla-mp movable toward and away from said cutter, a latching Adevice tor supporting said clamp in raised position, and means actuated by the cutter operating means for releasing said latching device.

ln a pencil sharpening machine, the combination ot `a sharpening cutter and means for operating it, with a pencil-holding clamp movable toward and away :troni said cutter, an automatic latching device for supporting'said clamp in outward positiomand an adjustable gage adapted to limit the movement ot' the clamp toward the cutter. 95

In a pencil sharpening machine, the combination of a sharpening cutter and means for operating it, with a pencil-holding clamp movable toward and away trom said cutter, an automatic latcliingdevice for supporting said clamp in outward position, a gage for limiting the enti-ance oit the pencil in said pencil-holding clamp. and an adjustable gage adapted to limit the movement of the clamp toward the cutter.

7. In a pencil sharpening machine, the combination ot' a sharpening cutter and means `for operating it, with a gravity operated pencil holding clamp movable toward and away from said cutter, means tor guiding 11g said clamp away trom said cutter. an automatically operating latehing device adapted to engage the clamp and support it in raised pesiticn, and means actuated by the cutter operating means tor releasing said l-.itching 11,5 device. c

8. ln a pencil sharpening machine. the eonibinat ion ot a. shariiiening cutter and means ior opta-'sling it. with al gravity operated pencil holding clamp movable toward and 12.9 away from said cutter, means actuated by said cutter operating means-apart' 'troni the pencil i'or guiding said clamp away from said cutter. and au automatically operating lati-hing device adapted to engage the clamp 125 and support it in raised position.

t). l'n a pencil .sharlieuing machine. the combination ot Va sharpening cutter and v means vtor operating it. with a gravity operated pencil holding clamp movable toward 13';

and away from said cutter, and an adjustable gagelimiting the `movement ot' the clamp toward the cutter.

10. In a pencil sharpening machine, the conibination of a sharpening cutter and means ttor operating it, with a gravity oper.- ated pencil holding clamp movable toward and away from Said cutter, and a gage between the cutter' and clamp for liiniting the entrance ot' the pencil in said pencil holding clamp.

ill. .lfn a pencil sharpening n'iachine, the combination ot a sharpening cutter and means Ylor operating itt, with a gravity olni ated pencil Leiding clamp movable toward and away trom .s id cutter, an 'adjustable gage a'flapted to limit the movement ot' the clainp toward the cutter, and a gage for limiting` the entrance ot' the pencil in said pencil holding clamp.

i2. ln a pencil sharpening machine, the combination ot a sharpening cutter and means i'or operating it, with a gravity operated pencil holding clamp movable toward and away from said cutter, an automatic latching device for supporting said clamp in raised position, and an adjustable gage adaiited to limit the movement of the clamp toward the cutter.

lin a pencil lsharpening machine, the combination ot' a sharpening cutter and means 'for operating it, with a gravity operated pencil holding clamp movable toward and away from said cutter, an automatic lati-hing device for supporting said clamp in raised position, a gage for limiting the entrance ot' the pencil in said pencil holding clamp, and an adjustable gage adapted to limit the movement of the clamp toward the cutter.

14. In a -pencil sharpening machine, the combination of a. sliarpening cutter and means for ope ating it, with a gravity operated pencil holding clamp movable toward and away l'rom said cutter. a lati-hing device 'lor supportingl said clamp in rai.--.ed position, and a pencil gage operated by said lalehingr device for limiting the entrance ot the pencil in said clamp.

l5. ln a. pencil sharpening machine, the combination ol' a sharpening cutter and means;l Vfor operating it, with a gravity operated `pencil holdingI clamp n'iovable toward and away trom .said cutter, a latching device tor supyiorting ,said clamp in raisedposition, and a pencil gage mounted upon said latching device i'or limiting the. entrance ot' the pencil in said clamp.

'llt lin a pencil sharpenii'ig machine, the combination oi' a sharpening cutter and means for operat ing` it, with a gravity operated pencil landing clamp movable tov'fard and away from .said cutter, a spring actuated latching device for supporting said clamp in raised position, and a pencil gaging plate jected thereby in the path l l l i i l l l l l l i l I l l deviceu and proof a pencil for limiting the entrance ot' the pencil in said clamp when the latching device is in action.

17.v In a pencil sharpening machine, the combination of a casing, a cutter mounted in said casing".l guides formed upon said casing, a pencil holding clamp formed with depending guide rods operatmv in said casing guides, and a clamp supporting latehing de vice mounted upon said casing and adapted to engage said rods.

1,8. ln a pencil sharpening machine, the coi'nbinatioii of a traine, a sharpening cutter mounted in Said frame, a pencil holding clai'np formed with depending guide rods having sliding bearings in said frame, one of said rods being formed with a latching,y notch or recess, and an auton'iatic latching device mounted upon said frame and adapted to engage Vthe notch or recess of said rod. i

lf). In a pencil sharpening machine, the combination ot' a frame, a sharpeningr cutter mounted 'in said traine, a pencil holding clamp formed with guide rods havingr sliding hearings in said trame, said clamp be` ing movable toward and away; from said cutter, and an automatic latching lever piv otally mounted upon said frame in position to engage one of Said guide rods.

20, In a pencil sharpening machine, the crnnbinati-on of a frame, a sharpening cutter mounted in Said frame, a pencil holding clamp movable toward and away from .said cutter, notched guide rods depending from carried by said latching said clamp and having sliding bearings in Said frame, and a pair of automatically operated latching leverel pivotally mounted upon said frame and adapted to engage said. guide rods for supporting t-he clamp in raised position.

Q1. In a pencil Sl'iarpening machine, the conibination of a frame, a sharpening cutter mounted in said frame, a pencil holding clamp, `guide rods depending from .said clamp and having bearings in said trame. a latching lever nivotally mounted upon said Vtrame and adapted to engage one ol Said rods, and a pencil raging plate secured to said latching lever in position to project across the path ol the pencil.

`ln a pencil sharpening machine, the

comliination ot a frame, a. rotarv cutter-- llii carryingl member ioin'nalcd in .said trame. 12o

a pencil holding clamp movable toward and away trom said cutter, a latching device t'or Y"holding,.said clamp in raised position` andmeans'carried by said rotary member 'lor` releasing said latching device.

22S. ln a pencil slnirpeniugr machine. the conibination ot' a suitable trame. a rotarv cutter-carryingA traine Iiournaled therein. pencil holding clamp movable toward and Iaway 'from said cutter7 a latclliimr lever adapted vtoV engage said clamp l tor holding it in raised position, a projection upon said lever, and a pm carried by said rotary trame adapted to engage said projection for releasing said latching device.

24. In a pencil sharpening machine. the combination with a suitable trame, a rotary member centrally jonrna'led in said trame, al drving'shaft geared to said rotary member, a pencil guiding recess formed in said rotary member, a rotary sharpening cutter journaled upon said rotary member at one side of said recess, a gear upon said cutter, a' ring gear mounted upon said trame and meshing with the gear upon said cutter, gravityfed clamping means for engaging a pencil, and means independent of the pencil 'tor snpportinrr said clamping means in operative position.

2 a pencil sharpening machine, the combination of a suitable casing, a rotary member journaled in upright position in said Casing and formed with a pencil guiding recess, an upright sharpening cut-ter journaled in said rotary member at one side of said guiding recess, gearing for driving said rotary member and cutter, a pencil holding clamp movable vertically toward said rotary member and cutter, and means for support-ing said clamp independently of said pencil.

QG.. n a pencil sharpening machine, the combination of a suitable casing, a top plate removably mounted upon 'said casing, a guide fr ame depending from said top plate and supported thereby Within said casing, a rotary member Wit-hin said depending -frame, a sharpening cutter carried by said rotary member,l gearing for operating said rotary member and cutter, and a pencil hold in clamp :tor presenting a pencil in operative relation to said cutter'and provided with supporting means guided by said frame.

27.111 a pencil shaipening machine, the;

combination ot a suitable casing,a top plate mounted upon said casing, and formed with a central opening through it., a frame' mounted upon said top plate and supported thereby Within said casing, a rotary member journaled at its lower end upon said trame and at its upper end upon said top plate, said rotary member being 'formed with a contracted pencil guiding recess open upon one side and in axial alinement. with the axis of rotation ot said member, a sharpening cutter journaled in said rotary member and presented at the open side of said recess, an internal ring gear surrounding said rotary member and suitably supported from said top plate, a gear upon said sharpening cutter meshing with said internal ring gear, means for driving said rotary member, and a pencil supporting and feeding clamp arranged to present a pencil in said con-it" tracted recess in operative relation to said cutter and to automatically feed it thereto.

` Signed at New York, N. Y., this 11th day of August, 1911.

LOUIS MYERS.

Witnesses:

Gro. L. VVHnnLocn, FLORENCE JCKSON. 

